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United States Patent | 6,094,847 |
Gallenberg | August 1, 2000 |
A method and apparatus for cleaning beaches or other similar sandy areas which includes a digger chain and an associated sweeper chain for capturing debris and other articles and conveying the same to a collection box or separation conveyor.
Inventors: | Gallenberg; Ronald J. (W9112 Cherry Rd., Antigo, WI 54409) |
Appl. No.: | 143495 |
Filed: | August 28, 1998 |
Current U.S. Class: | 37/422; 37/424; 37/431; 37/432; 37/463; 37/464; 171/38; 171/65; 171/118 |
Intern'l Class: | E02F 003/65; E02F 003/08; A01B 033/00 |
Field of Search: | 171/DIG. 2,38,64,65,118,144 37/190,422,424,431,432,463,464,465 |
916479 | Mar., 1909 | Normandin | 171/118. |
994513 | Jun., 1911 | Herbert | 171/118. |
1313053 | Aug., 1919 | Beard | 171/118. |
1578600 | Mar., 1926 | Greatrix | 171/118. |
2110997 | Mar., 1938 | Mayfield | 171/64. |
2296851 | Sep., 1942 | Henry | 171/64. |
2747354 | May., 1956 | Bloser | 171/118. |
2976936 | Mar., 1961 | Fry | 171/64. |
3316977 | May., 1967 | Snook | 171/64. |
3353342 | Nov., 1967 | Hill et al. | 171/118. |
3521710 | Jul., 1970 | Tillotson | 171/38. |
3831299 | Aug., 1974 | Kelley | 37/191. |
3991493 | Nov., 1976 | Orth | 37/7. |
4482019 | Nov., 1984 | Murphy | 171/63. |
5497569 | Mar., 1996 | Byman | 37/410. |
Foreign Patent Documents | |||
72547 | Apr., 1916 | AT | 171/118. |
0 277 739 A1 | Jan., 1988 | EP | 171/64. |
61990 | Sep., 1951 | FR | 171/118. |
1393327 | May., 1988 | SU | 171/65. |